John Wesley on Job 2:11

They - Who were persons eminent for birth and quality, for wisdom and knowledge, and for the profession of the true religion, being probably of the posterity of Abraham, a - kin to Job, and living in the same country. Eliphaz descended from Teman, the grandson of Esau, Gen 36:11. Bildad probably from Shuah, Abraham's son by Keturah, Gen 25:2. Zophar is thought to be same with Zepho, (Gen 36:11.) a descendant from Esau. The preserving of so much wisdom and piety among those who were not children of the promise, was an happy presage of God's grace to the Gentiles, when the partition wall should be taken down.